Unwanted Clinical Complications Following the Consumption of Death Coffee: A Case Series.

"Death Coffee" is an incredibly potent brew with caffeine content three times higher than conventional coffees, making it the strongest coffee in the world. Caffeine, a relatively safe psychostimulant substance consumed as dietary products or daily drinks, enhances physical and mental performance. According to long-lasting safe experiences of daily coffee consumption, caffeine intoxication with a cup of coffee is hardly believable in Iran. This paper reports five cases of coffee toxicity with a single cup of coffee within the last weeks. Presentation of toxicity varied among patients and ranged from lethargy to hallucination, tremors, agitation, shortness of breath, and decreased level of consciousness. Surprisingly, all five patients consumed an unknown caffeinated beverage called Death Coffee within 12 weeks, demonstrating that a new and unknown beverage prevails in our region.